Stuck in /warp jail

So I was going through the warp list checking places out, turns out "jail" gets you stuck. I can see I'm at y-level 2, and that's about it. It appears to be a nether portal (but doesn't port me anywhere since they're disabled). I can jump and switch between items, but I can't pull up chat to port home and can't open inventory.

So yeah, completely stuck with no way out. Any ideas how I can get out?